WQ1-SCIENTIFIC METHODS

​REMEDIATION

SCIENTIFIC METHODS
WEEKLY QUIZ 1

​Scientific Method: Independent and Dependent Variables

Multiple Choice

Alysha wants to test the effect of different materials on the melting rate of ice. She finds the initial mass of four pieces of ice. She then covers three pieces with either tinfoil, wool cloth, or paper. The fourth piece is left uncovered.

After 30 minutes, Alysha calculates the final mass of each piece of ice to determine which melted the fastest.

What is the dependent variable in this experiment?

• Final Ice Mass

• Ice Covering

• Time

• Uncovered Ice

​Steps in
Scientific Method

Multiple Choice

Juan notices that water appears to evaporate from his 30 gallon saltwater aquarium faster than from his 30 gallon freshwater aquarium.  Juan wants to know if his observation is true.  At what point is Juan at in the scientific method?

• Conducting the Experiment

• Identifying the Question

• Forming a Hypothesis

• Analyzing the Data

• Drawing a Conclusion

Multiple Choice

Kim’s experiment showed that chicken eggshells were stronger when she gave the hen feed, to which extra calcium had been added.  At what point is Kim at in the scientific method?

• Conducting the Experiment

• Identifying the Question

• Forming a Hypothesis

• Analyzing the Data

• Drawing a Conclusion

​Scientific Method : Hypothesis

Multiple Choice

Alysha wants to test the effect of different materials on the melting rate of ice. She finds the initial mass of four pieces of ice. She then covers three pieces with either tinfoil, wool cloth, or paper. The fourth piece is left uncovered.

After 30 minutes, Alysha calculates the final mass of each piece of ice to determine which melted the fastest.

What would be an appropriate hypothesis for this experiment?

• If I cover a piece of ice with tin foil, then it will melt fastest.

• If I put and ice cube outside, then it will melt.

• The ice cube covered with paper will melt in one hour.

• The wool cloth is the best insulator.

Observation - the actual thing you observed using your 5 senses.

Inference - the logical conclusion using your observations

​Observation vs. Inference

Multiple Choice

Richard was observing black swallowtail butterflies in the field.  Which one of these is an observation he made about a black swallowtail butterfly?

• The black swallowtail belongs to the class Insecta.

• The black swallowtail likes to fly more than anything else. 

• The black swallowtail laid its eggs on a parsley plant.

• The black swallowtail is closely related to the spicebush swallowtail.